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test_overflow: Report test failures

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This adjusts the overflow test to report failures, and prepares to
add allocation tests.

Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2018-05-09 22:13:28 -07:00
parent 6d3344324b
commit 8fee81aa45
1 changed files with 39 additions and 15 deletions
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54
lib/test_overflow.c
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@ -220,30 +220,38 @@ DEFINE_TEST_ARRAY(s64) = {
pr_warn("expected "fmt" "sym" "fmt \
" to%s overflow (type %s)\n", \
a, b, of ? "" : " not", #t); \
err = 1; \
} \
if (_r != r) { \
pr_warn("expected "fmt" "sym" "fmt" == " \
fmt", got "fmt" (type %s)\n", \
a, b, r, _r, #t); \
err = 1; \
} \
} while (0)
#define DEFINE_TEST_FUNC(t, fmt) \
static void __init do_test_ ## t(const struct test_ ## t *p) \
static int __init do_test_ ## t(const struct test_ ## t *p) \
{ \
int err = 0; \
\
check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \
check_one_op(t, fmt, add, "+", p->b, p->a, p->sum, p->s_of); \
check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \
check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \
check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \
\
return err; \
} \
\
static void __init test_ ## t ## _overflow(void) { \
static int __init test_ ## t ## _overflow(void) { \
int err = 0; \
unsigned i; \
\
pr_info("%-3s: %zu tests\n", #t, ARRAY_SIZE(t ## _tests)); \
for (i = 0; i < ARRAY_SIZE(t ## _tests); ++i) \
do_test_ ## t(&t ## _tests[i]); \
err |= do_test_ ## t(&t ## _tests[i]); \
return err; \
}
DEFINE_TEST_FUNC(u8, "%d");
@ -257,27 +265,43 @@ DEFINE_TEST_FUNC(u64, "%llu");
DEFINE_TEST_FUNC(s64, "%lld");
#endif
static int __init test_overflow(void)
static int __init test_overflow_calculation(void)
{
test_u8_overflow();
test_s8_overflow();
test_u16_overflow();
test_s16_overflow();
test_u32_overflow();
test_s32_overflow();
int err = 0;
err |= test_u8_overflow();
err |= test_s8_overflow();
err |= test_u16_overflow();
err |= test_s16_overflow();
err |= test_u32_overflow();
err |= test_s32_overflow();
#if BITS_PER_LONG == 64
test_u64_overflow();
test_s64_overflow();
err |= test_u64_overflow();
err |= test_s64_overflow();
#endif
pr_info("done\n");
return err;
}
return 0;
static int __init test_module_init(void)
{
int err = 0;
err |= test_overflow_calculation();
if (err) {
pr_warn("FAIL!\n");
err = -EINVAL;
} else {
pr_info("all tests passed\n");
}
return err;
}
static void __exit test_module_exit(void)
{ }
module_init(test_overflow);
module_init(test_module_init);
module_exit(test_module_exit);
MODULE_LICENSE("Dual MIT/GPL");